EP 1707285 A1 20061004 - Punch
Title (en)
Punch
Title (de)
Stanzwerkzeug
Title (fr)
Poinçon
Publication
Application
Priority
JP 2005094691 A 20050329
Abstract (en)
A punch for use in molding a workpiece with lubricating oil interposed between the punch and the workpiece includes a straight portion (6) at its end and a diameter-increasing portion (5). The straight portion includes an end face (6a) at its end and a side face (6b). The straight portion (6) extends in an axial direction. The end surface extends (6a) in a radial direction perpendicular to the axial direction. The side surface (6b) is connected to the end surface. The diameter-increasing portion (5) is connected to the straight portion (6). The diameter-increasing portion (5) includes a width in the radial direction, which is identical to that of the straight portion (6), at a junction between the straight portion (6) and the diameter-increasing portion (5). The width of the diameter-increasing portion in the radial direction increases with distance from the straight portion. At least one of the end surface (6a) and the side surface (6b) of the straight portion (6) is formed with a pit (10).
IPC 8 full level
B26F 1/14 (2006.01); B21D 37/18 (2006.01); B23P 15/16 (2006.01); B41J 2/16 (2006.01)
CPC (source: EP US)
B23P 15/16 (2013.01 - EP US); B26F 1/14 (2013.01 - EP US); B41J 2/162 (2013.01 - EP US); B41J 2/1632 (2013.01 - EP US); B41J 2/1637 (2013.01 - EP US); B26D 7/088 (2013.01 - EP US); Y10T 29/49833 (2015.01 - EP US); Y10T 29/49837 (2015.01 - EP US); Y10T 83/9423 (2015.04 - EP US); Y10T 83/9428 (2015.04 - EP US)
Citation (applicant)
JP S57208250 A 19821221 - NIKKOSHI CO LTD
Citation (search report)
- [Y] EP 0858893 A2 19980819 - FUJITSU LTD [JP]
- [A] US 5054308 A 19911008 - ASAI TOMOHITO [JP], et al
- [XY] PATENT ABSTRACTS OF JAPAN vol. 015, no. 283 (M - 1137) 18 July 1991 (1991-07-18)
- [DA] PATENT ABSTRACTS OF JAPAN vol. 007, no. 063 (M - 200) 16 March 1983 (1983-03-16)
- [A] PATENT ABSTRACTS OF JAPAN vol. 006, no. 180 (C - 125) 14 September 1982 (1982-09-14)
- [A] PATENT ABSTRACTS OF JAPAN vol. 006, no. 114 (C - 110) 25 June 1982 (1982-06-25)
- [A] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 05 12 May 2003 (2003-05-12)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1707285 A1 20061004; EP 1707285 B1 20120606; CN 100525948 C 20090812; CN 1840260 A 20061004; JP 2006272391 A 20061012; JP 4341572 B2 20091007; US 2006219081 A1 20061005; US 2010037672 A1 20100218; US 8596105 B2 20131203
DOCDB simple family (application)
EP 06005497 A 20060317; CN 200610068057 A 20060324; JP 2005094691 A 20050329; US 39035206 A 20060328; US 60524309 A 20091023